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Correct Entrypoint Redirect with Stripped or Added Path

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This commit is contained in:
Daniel Tomcej 2018-07-31 03:28:03 -06:00 • committed by Traefiker Bot
parent eea60b6baa
commit 91cafd1752
6 changed files with 222 additions and 4 deletions
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20
middlewares/stripPrefix.go
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@ -1,12 +1,21 @@
package middlewares
import (
"context"
"net/http"
"strings"
)
// ForwardedPrefixHeader is the default header to set prefix
const ForwardedPrefixHeader = "X-Forwarded-Prefix"
const (
// StripPrefixKey is the key within the request context used to
// store the stripped prefix
StripPrefixKey key = "StripPrefix"
// StripPrefixSlashKey is the key within the request context used to
// store the stripped slash
StripPrefixSlashKey key = "StripPrefixSlash"
// ForwardedPrefixHeader is the default header to set prefix
ForwardedPrefixHeader = "X-Forwarded-Prefix"
)
// StripPrefix is a middleware used to strip prefix from an URL request
type StripPrefix struct {
@ -17,18 +26,21 @@ type StripPrefix struct {
func (s *StripPrefix) ServeHTTP(w http.ResponseWriter, r *http.Request) {
for _, prefix := range s.Prefixes {
if strings.HasPrefix(r.URL.Path, prefix) {
trailingSlash := r.URL.Path == prefix+"/"
r.URL.Path = stripPrefix(r.URL.Path, prefix)
if r.URL.RawPath != "" {
r.URL.RawPath = stripPrefix(r.URL.RawPath, prefix)
}
s.serveRequest(w, r, strings.TrimSpace(prefix))
s.serveRequest(w, r, strings.TrimSpace(prefix), trailingSlash)
return
}
}
http.NotFound(w, r)
}
func (s *StripPrefix) serveRequest(w http.ResponseWriter, r *http.Request, prefix string) {
func (s *StripPrefix) serveRequest(w http.ResponseWriter, r *http.Request, prefix string, trailingSlash bool) {
r = r.WithContext(context.WithValue(r.Context(), StripPrefixSlashKey, trailingSlash))
r = r.WithContext(context.WithValue(r.Context(), StripPrefixKey, prefix))
r.Header.Add(ForwardedPrefixHeader, prefix)
r.RequestURI = r.URL.RequestURI()
s.Handler.ServeHTTP(w, r)